Pumping mechanism



Jams, 1928. 1,654,588

L. T. HOLDAWAY PUMPING MECHANISM Filed March l5, 1926 2 Sheets-Sheet 2 eIl 1 Invenor, Zo/rus 7." 'oldaway.

Patented Jan.' 3, 192s.

UNITED STATESA PATENT oFFicI-z.

PUMPING MECHANISH.

Application led March 15, 1926,- Serial No. 94,817.

' set being capable of being switched into oper- -ation while the other set is left free for inspection, repair or adjustments, thus making in one pump what is usually embodied in two pumps of this character. p

In order to more fully explain my Ainvention, I have illustrated one practical embodiment thereof on the accompanying sheets of drawings, which I will now describe.

Figure 1 is a vertical, longitudinal sectional view'through a 4pump embodying my invention;

Figure 2 is a horizontal sectional `view taken on the line 2-2 of Fig. 3; Ji

Figure 3 is a vertical cross sectional view taken on .line 3 3 of Fig. 1;

Figure 4 is a fragmentary sectional view on line 4 4 of Fig. 2;

Figure 5 is a similar View taken on lline 5 5 of Fig. 3; Y

Figure 6 isa sectional view taken on line 6 -6 of Fig. 5;

Figure 7 `s a sectional view on line '7-7 of Fig. 1; l

F'gure 8 is a similar view on line 8-8 of Fig. 1; and

Figure 9 is a sectional viewr on line 9- 9 of Fig. 3.

Referring now in detail to the drawings, the body comprises the 4upper part, 1 and a lower part, 2, with a cylindrical valve Cham- '.ber, 3, therebetween, said valve chamber being of slightly conical, or tapering form, with cylindrical valve member of, similar form, designated 4, therein, controlling. communication between the upper part of' Alongitiudinally extending partitionz 5, and,-

with a horizontal, longitudinal extending partition,y 6, as indicated in said Figs. 1 and 3.

The lower part of said body, 2, is also provided with a longitudinally extending artition,.7, and each side of said partition is divided into two compartments, as 8, 8, and 9, 9', communicating at their tops with two cylindrical chambers, 10 and 11,- in which work two pistons, 12 and 13, with the piston rods, 14 and 15, vwith conduits, as 16,'

through the piston rod and out through one side of each piston, at one end, and at its other end, said conduit turns out through the side of the piston rod and communicates with a pan-like member, through which the outer portion of the piston rods work, as seen in Figs. 1 and 5 and 6, for a purpose hereinafter again referred to. Said panlike member is designated'P. i

Mounted in the four compartments, 8, 8', and 9, 9, are four flexible bag-like members, 17, 18, 19 and 20, connected at their mouths by means of a neck member, each designated 21, with the opposite yends of the two cylindrical chambers 10 and 11, as will be clear from the drawings. These cylindrical chambers 10 and 11, and said bags, A17, 18, 19 and 20, are partially filled with a fluid medium,

such as oil or other suitable fluid adapted.

purpose of creating a pumping action within the four compartments, 8,-8, 9 and 9', for as the bag in one compartment'is collapsed a suction or vacum action is created within the compartment which draws into the com. y

partmentw themud mixture being pumped, and when said bag is expanded by the forcing of the oil, or other uid into said bag,

said mudemixture lis forced out from ,saidv compartment, as will be understood from the showing. Asany ofthe oil or` Huid in the cylinders, l10 and 11, and the bags, 17 18, 19 and 20, is forced by the piston rings, as where therel might be excessive pressure, it

los) will be drawn into the conduit, 16, in said y piston and piston rod, and conveyed to the pan P, thus vallowing the full stroke 'of the piston. As the piston is returned and the ba is completely-collapsed, there will be su cient suction created to draw some of apparatus are the oil through said conduit 16, from the pan P, and thus compensatefor any excess o'r lack on either side of the piston. lCheck valves, as 21, .are placed in the bottom of said pan, P, to Control outlet from said pan through conduit members, as 22, 22, frein the pan to the cylinders, as will be seen in Figs. 3. t5 and v6, the inlets into the cylinders being indicated in the cylinder 11, 1, by the little circles, 22. Thus oil or uid forced past the pistons by excessive pressure will4 pass through conduits 16, 16, to the pan P, and from said pan said fluid or oil wil be sucked through the conduit members, 22, 22, back to the cylinders. Thus the oil or operating iiuid used in the cylinders and bags is used over and over and is moved from one bag by each piston to the cylinder at one side, and at the other side of the piston is forced into the other bag, as before referred to. This makes possible a maximum wear and utilit-y of the pumping part of the apparatus, for the mud and sand and other matter which causes the wear and disturbancedoes not get into the cylinders in which the pistons operate and does not get intol the bags, but the breathing action, the expansion and contraction of the bags, causes the pumping action of the mud mixture as used in connection with such pumps.

The v'alve member 4, 1t will be seen Ais provided with a series of ports therethrou h and these are of diiferent forms as may e required for making certain connections for communications. At the left hand end of said valve member, Fig. 1, is a port, 23, seen in Fi 3, opening communication between the le hand portion of thevtop par-t of the body, and the right hand portion of the lower partof said body. When the valve member is turned a'quarter turn, vsaid port, 23, is in the reverse position, as indicated in light broken lines; Fig. 3,' connecting theupper right hand part of the apparatus with the lower left hand portion thereof. The

next two ports through said valve member, designated 24 and. 25, are shown in section,

respectively, in Figs.. 7 and 8. The next three ports through said valve member are identical with the thiee-just-described, that is, ports, 28, 27 and 26, correspond with ports, 23, 24 and 25, respectively'.

The intake and dischargezopenings to the designated, respectively, 28 and 29, as seen in Figs. 1, 4, and 2, and as seen in Figs. .2 and 4, there is a two-way` lug valve member, 30, whichcontrols the lnlet and the outlet from the different sides of the machine. As seen in Figs. 1, 2, 3 and 4, said valve isset so that' the intake 28 leads into an intake chamber 28', thence I .through the intake valve, 31, into the chamber, 32, at the' left hand side of the partition 5, Fig. 3, from whence it passes through the v23,and down into the chamber 9, being ber 39. W

I have provided each of the valve members,

drawn into this chamber reasonof the contraction of the bag,19. On the expansion of said bag, 19, said mixture is forced `side of the piston, 13, into bag 20, as seen in Fig. 1. This action is discharging `the mud mixture from vchamber or compartment 9', out through port 28, in said valve, 4, and up 'through outlet valve, 41 to the main outlet chamber 29 and outlet 29. The action just described represents the operation of one sidev of the pump, with the double action .out through the port, 23, and up through caused by one complete movement of the piston from one end of the cylinder to the 1 other, operating the two bags 19 and 20, as seen in Fig. 1.

In Fig. 2, which is an irregular horizontal sectional vlew, taken on the line 2-2, of Fig. 3, the chamber designated 32, in said Fig. 3, is so designated, 32, in Fig. 2y and is below the discharge valve, 33. This chamber is used both'as intake and discharge chamber. When bag 20, was expanded. as described, and the mud mixture was forced out throughl port, 28, it entered chamber 39, before passing through the outlet valve 41.

The other iston, 12, is operating alter-I nately lwith plston 13, and its action is similar, using the ports, 24 and 27, in said valve 4, and on thexsuction strokethereof moveutilizes only one halfv of the u" per, or valve mechanismof-the piimp, and a l of the lower part of. the;` pump. In case something hapensto thisl valve mechanism-of the. pump, 1t is only' necessary to turn the valve member 4,' a quarterturn, and the plug valve 30, a quarter turn, whereupon the other' valve mechanism, or half of the upperpart of the pump will function through the lower part of. the pump. Referring to Fig. 2," the chamber or passage, 42, corresponds with 29, as the discharge passage. A suction chamf' ber, 43, corresponds with suction chamber 28. Chamber 44, corresponds to chamber 32, and chamber 45, corresponds to chambery 35, and chamber 46,`corresponds tochamber 38, andl chamber 47, corresponds to cham- 4 and 30 with `a rubber, or other suitable packing which is secured to the valve member, as by vulcanizing, in order that the.

discharge or outlet-'valves 40 and 34. This valve may fit' suiciently close'to prevent 180 sand or other foreign matter from getting into the valve seat. 'Ilhis packing or lining is designated R.

Thus it will be Vseen that the upper part of the pump is of duplex character,'or has two sets of valve controlling mechanisms, either one of which can be used with the lower half of said pump, so that in case one set goes wrong, the other set can be put to use by simply turning the two valve members, 4 and 30, as 'before described. This makes it possible to continue theuse of the pump while the valve set which is out-oforder is being repaired, and as the valve mechanism constitutes the part of the pump which gets the most wear, it will be seen that I have two pumps in one, for the pumping mechanism, that is, the cylinders and pistons and bags in which the clean oil, or other suitable iuid is used, has little wear and will outwear two sets of valve controlling mechanisms, provided for in the upper half of the pump, as here shown and described.

I do not limit m invention to the details l of construction an arrangement shown and described, except as .I may be limited by the hereto appended claims.

I claim:

1. In a pumping mechanism of the character referred to, in combination, a body portion having therein two sets of inlet and outlet control valves, a body portion having therein a pumping mechanism comprising compartments having therein expansion and contraction bags, a cylinder communicating at its opposite ends with said bags, a piston operating in said cylnder, an operatng fluid in said c linder and bags and adapted to be alternate y pumped from bags to cylinders for the purpose of alternately expanding and contracting said bags in said compart-` ments, a valve interposed between said compartments and said first mentioned body porftion, said'valve havingv ports therein for selectively connecting said compartments with either of the sets of inlet and outlet `control valves, whereby said pumpin mechinterposed between the upper fixed body and -said lower body. and controlling the communication between said compartments and saidlmtake and exhaust openings.

. 3. In a pumping mechanism, a fixed body having intake and exhaust openlngs, a p lurality of compartments communicating with said openings, bag-like'elements within said compartments adapted to be expanded and contracted by filling fluid, a cylinder connected with said bag-like elements, a piston working in said cylinder, an-operating filling fluid in said cylinder at opposite sides of said piston and ada ted to e forced into and drawn from sai bag-like elements to expand and contract the same within said compartments, whereby said expansion and contraction within said compartments of said baglike elements operates as a pumping mechanism through said intake and exhaust open- In a pumping mechanism, a body having intake and exhaust openings, two sets of intake valves and two setsof exhaust ..1

valves adapted to be selectively' set for controlling the intake and exhaust of said pumping mechanism, aplurality of compartments, a valve member interposed between said compartments and said intake and exhaust openings, said valve being adapted to controlcommunication between said compartments and through -either set of intake and exhaust valves, bag-like elements in said compartments adapted" to be expanded and contracted, a plurality of cylinders connected with said bag-like elements, an operating fluid in said cylinders to be forced into and drawn from said bag-like elements, whereby to expand and contract-the same tol produce` a pumpng action in said compartments, pistons for said cylinders for moving said operating fluid into and out of said bag-like elements.

5. In a pumping mechanism, in combination, a body having in one part thereof, two sets of intake and exhaust control valves with intake and exhaust openings adapted to be connected with either set of control valves, a valve for controlling the connection, said body having one part provided with al i plurality of compartments, -a valve member for selectively controlling the communication l.between said compartments and either set of control valves to said intake and .exhaust openings, a plurality of cylinders with pistons therein, bag-like Aelements in said compartments and connected in communication with said cylinders, an operating fluid in said cylinders to be forced into and drawn from said bag-like elements to expand and contract the same, wherebyto create a pumping action in said compartments through said valve member and said intake and exhaust openings through eitherV setof control valves, substantially asv described.

- 6. In a pumping mechanism, a body structure having intakev and exhaust openings, means for creating a pumping action therethrough, two sets of control valves for dicourse,

recting said pumpinn' action through either of two sets of cham ers, whereby either of saidsets of chambers can be connected between said pumping means and said intake and exhaust openings, and a valve interposed between said pumping means and said sets'ofchambers, whereby said pumping action can be directed through either set of chambers and control valves.

7. In a pumping mechanism, in combination, means providing twooour'ses of intake and exhaust with control valves for each means for creating a pumping action, a valve interposed to selectively control which course of intake and exhaust said pumping action will be directed through, whereby to make possible repair of one set of control valves while said pumping action is directed through another set of control valves. l

8.l In a pumpingmechanism, a body having in its upper portion two courses of intake and exhaust and twosets of valves for controlling the intake and exhaust through said courses, a pumpin means comprising compartments adapte to be connected with either of said courses of intake'and exhaust, a valve adapted for selectively connectingy said pumping means with said courses of intake and exhaust, bag-like elements in said compartments, cylinders and pistons in communication with said bag-like elements, and an operating-fluid in said cylinders to be forced into and drawn from said-bag-like elements for creating a pumping action in said compartments, and means Jfor equalizing the pressure of said operating fluid at opposite sides of said pistons by providing means for transferring fluid from one side to the other during the operation of said pistons.

' Signed at Los Angeles, Los Angeles County, California, this 26th day of February 1926.

LoRUs 'LHOLDAWAY 

